Method for winding transformers
a transformer and winding technology, applied in the direction of magnets, inductances, magnetic bodies, etc., can solve the problems of affecting the electrical output characteristics, the laying of copper wires is irregular, and the insulation of copper wires is relatively poor, so as to improve the reliability and quality of transformers, reduce the electric potential difference, and the effect of uniform and neat laying
Inactive Publication Date: 2005-12-22
TAIWAN THICK FILM IND
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Benefits of technology
[0005] Therefore the primary object of the invention is to resolve aforesaid disadvantages. The invention aims at winding copper wires by layers. When winding of the secondary coils is finished, the copper wires of every coil are evenly and neatly laid with a smaller electric potential difference between the copper wires. Every layer of the copper wires is isolated by a covering insulation film. Thus short circuit is unlikely to take place, and output electric characteristics of the transformer can be maintained as desired. As a result, the reliability and quality of the transformer can be enhanced.
Problems solved by technology
Such a design often results in irregular laying of copper wires in the same trough during winding the secondary coils.
In addition, the copper wires have relatively poor insulation (cavities, scratches, etc) and are prone to cause short circuit and affect electric output characteristics.
Consequently, the reliability and quality of the transformer could be adversely impacted.
Method used
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[0013] Refer to FIGS. 2 and 3A for a transformer according to the invention. The winding method of the invention is adopted for use on Sub-miniature Tube Transformers. The transformer includes at least a winding shaft 1, an iron core 2 located in winding shaft 1, and a shell 3 to encase the winding shaft 1 and the iron core 2. The winding shaft 1 has a winding zone 11 for winding coils (not shown in the drawings). The winding zone 11 has two sides each has a connection section 12 communicating with each other. The connection sections 12 may connect the iron core 2. After the winding shaft 1 and the iron core 2 are coupled, they are encased in the shell 3 to form a transformer to output electric power.
[0014] Referring to FIGS. 3B and 3C, the winding zone 11 of the winding shaft 1 may be wound by enameled wires (copper wires coated with lacquer) of the same or different diameters to form a primary coil 4 and secondary coils 5.
[0015] For winding the primary coil 4 and the secondary c...
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Abstract
A method for winding transformers is adopted for use on Sub-miniature Tube Transformers. The transformer includes a winding shaft which has a winding zone. At least one layer of primary coil is wound on the winding zone, and a first insulation layer is covered on the wound primary coil. Then a plurality of layers of secondary coils are continuously wound on the first insulation layer. Each layer of the secondary coils is covered by a second insulation layer such that the second insulation layer is applied to the secondary coil without the wire of the secondary coil being cut. Thus short circuit resulting from peeling off of the lacquer on the copper wires during winding the secondary coils can be avoided, and electric output characteristics of the transformer are improved, and the reliability and quality of the transformer are enhanced.
Description
[0001] This application is a continuation-in-part, and claims priority, of from U.S. patent application Ser. No. 10 / 186,720 filed on Jul. 2, 2002, entitled “METHOD FOR WINDING TRANSFORMER”.FIELD OF THE INVENTION [0002] The present invention relates to a method for winding transformers and particularly a method for preventing short circuit caused by peeling off of lacquer on the coils during winding secondary coils. BACKGROUND OF THE INVENTION [0003] The presently known transformers generally consist of a winding shaft, coils wound on the winding shaft, an iron core located in the winding shaft and a shell encasing the winding shaft and the iron core. The coils wound on the winding shaft include a primary coil and secondary coils. For winding the primary coil and the secondary coils, first, the primary coil is wound in a primary coil trough. After winding of the primary coil is finished, the secondary coils are wound on the same winding shaft. As the secondary voltage is higher, the ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01F7/06H01F17/04H01F27/30H01F27/32H01F41/06
CPCH01F17/043H01F27/306H01F27/323Y10T29/49071H01F41/062Y10T29/4902H01F27/325H01F41/068
Inventor WU, CHI-CHIH
Owner TAIWAN THICK FILM IND